Smart Appliances Guide

PARTS & ASSEMBLIES

Connected Smart Appliances - Gen III

3-5

For Service Technician Use Only

Reference power line

BLACK

WIRE

(CT-)

WHITE

WIRE

(CT+)

Current Transformer (CT)

Real power is measured using current transformer(s).

n The current transformers act like an amp probe that

measure current usage so that actual power can be

calculated.

n Appliances using L2 have two current transformers,

CT1 and CT2 (L1 and L2 respecvely).

n Current Transformers are integrated into the appliance

wiring harness on all models.

The output of the Current Transformer(s) is connected to the

Power Management Board at connector J4, pins 1 & 2 (CT1)

and if L2 exists, pins 3 & 4 (CT2).

Typical Current Transformer assembly shown in gure 5.

Figure 5 - Current Transformer

Figure 6 - Current Transformer Schematic

Black face

of current

transformer

towards power

source

Direction of

primary current flow

BLACK

WIRE

(CT-)

WHITE

WIRE

(CT+)

2500T